hb-ot-shape.cc revision 1e7d860613032e40a3f90e2caa2ee5ac44ab8c8c
12014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod/* 22409d5f8d7dd8b535ce5ea29e933f7db27d33793Behdad Esfahbod * Copyright © 2009,2010 Red Hat, Inc. 3359dcaa0d33271025ca42a5f54ecbac7ae3b56d3Behdad Esfahbod * Copyright © 2010,2011 Google, Inc. 42014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 5c755cb3e3ac55156d0d2ec05adea7a650b97cc41Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 62014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 72014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * Permission is hereby granted, without written agreement and without 82014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 92014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * software and its documentation for any purpose, provided that the 102014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 112014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * all copies of this software. 122014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 132014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 142014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 152014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 162014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 172014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * DAMAGE. 182014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 192014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 202014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 212014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 222014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 232014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 242014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 252014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * Red Hat Author(s): Behdad Esfahbod 26476c94218b4f5b8e119e82b0e10b641e0c10bf56Behdad Esfahbod * Google Author(s): Behdad Esfahbod 272014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod */ 282014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 29027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#define HB_SHAPER ot 30027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#define hb_ot_shaper_face_data_t hb_ot_layout_t 31e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod#define hb_ot_shaper_shape_plan_data_t hb_ot_shape_plan_t 32027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#include "hb-shaper-impl-private.hh" 33027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod 344924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#include "hb-ot-shape-private.hh" 35b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod#include "hb-ot-shape-normalize-private.hh" 362014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 37b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod#include "hb-ot-layout-private.hh" 381827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod#include "hb-set-private.hh" 3972657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod 40acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 41f6fd3780e12b23ff7ed3743497c8996e71dcb064Behdad Esfahbodhb_tag_t common_features[] = { 422014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 43a5f1834f57ea3fb254f5c7d372747de316fcc8f1Behdad Esfahbod HB_TAG('l','i','g','a'), 4489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 4589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 4889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 4989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 50d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 5189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t horizontal_features[] = { 5289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 532014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 54bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 552014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 5689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 5889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod/* Note: 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * Technically speaking, vrt2 and vert are mutually exclusive. 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * According to the spec, valt and vpal are also mutually exclusive. 6189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * But we apply them all for now. 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod */ 6389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t vertical_features[] = { 6489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','a','l','t'), 6589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 6689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','k','r','n'), 6789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','p','a','l'), 6889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','r','t','2'), 692014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 702014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 71b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 72b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 73b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_planner_t 74b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 75b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_map_builder_t map; 76693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod const hb_ot_complex_shaper_t *shaper; 77b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 78b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_planner_t (void) : map () {} 79b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod ~hb_ot_shape_planner_t (void) { map.finish (); } 80b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 81b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod inline void compile (hb_face_t *face, 82b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_segment_properties_t *props, 83e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_plan_t &plan) 84b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod { 85b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod plan.shaper = shaper; 86b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod map.compile (face, props, plan.map); 87b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod } 88b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 89b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod private: 90b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod NO_COPY (hb_ot_shape_planner_t); 91b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 92b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 932014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 9490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 9549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 9690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 9790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 982014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 99895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 1000e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 10190645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','a')); 10290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','m')); 1030e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 1040e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 10590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','a')); 10690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','m'), false); 1070e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 1080e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_TTB: 1090e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_BTT: 1103286fc0e9adc3f2874c9409e7fdb09e4d2b7dda1Behdad Esfahbod case HB_DIRECTION_INVALID: 1110e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod default: 1120e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 1130e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod } 1140e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod 11589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#define ADD_FEATURES(array) \ 11689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_STMT_START { \ 11789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (array); i++) \ 11889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod planner->map.add_bool_feature (array[i]); \ 11989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod } HB_STMT_END 12089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 121693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->collect_features) 122693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod planner->shaper->collect_features (planner->shaper, &planner->map, props); 123e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 12489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (common_features); 12589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 12689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 12789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (horizontal_features); 12889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 12989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (vertical_features); 13089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 131693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->override_features) 132693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod planner->shaper->override_features (planner->shaper, &planner->map, props); 133d96838ef951ce6170eb2dc576ebcba2262cf7008Behdad Esfahbod 13489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#undef ADD_FEATURES 13589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 136895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 137895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 13890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_feature (feature->tag, feature->value, (feature->start == 0 && feature->end == (unsigned int) -1)); 139e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 140e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 141e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 142e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 143e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 144e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper face data 145e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 146e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 147e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_face_data_t * 148e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_create (hb_face_t *face) 149e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 150e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return _hb_ot_layout_create (face); 151e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 152e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 153e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 154e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data) 155e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 156e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod _hb_ot_layout_destroy (data); 157e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 158e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 159e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 160e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 161e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper font data 162e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 163e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 164e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodstruct hb_ot_shaper_font_data_t {}; 165e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 166e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_font_data_t * 167e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_create (hb_font_t *font) 168e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 169e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return (hb_ot_shaper_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; 170e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 171e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 172e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 173e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_destroy (hb_ot_shaper_font_data_t *data) 174e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 175e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 176e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 177e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 178e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 179e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper shape_plan data 180e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 181e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 182e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_shape_plan_data_t * 183e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan, 184e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod const hb_feature_t *user_features, 185e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod unsigned int num_user_features) 186e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 187e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_plan_t *data = (hb_ot_shape_plan_t *) calloc (1, sizeof (hb_ot_shape_plan_t)); 188e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod if (unlikely (!data)) 189e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return NULL; 190e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 191e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_planner_t planner; 192e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 193e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod assert (HB_DIRECTION_IS_VALID (shape_plan->props.direction)); 194e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 195e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (&shape_plan->props); 196e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 197e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_collect_features (&planner, &shape_plan->props, user_features, num_user_features); 198e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 199e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod planner.compile (shape_plan->face, &shape_plan->props, *data); 200e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 201e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return data; 202e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 203e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 204e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 205e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_shape_plan_data_destroy (hb_ot_shaper_shape_plan_data_t *data) 206e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 207e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod data->map.finish (); 2084ba647eecf0f70917ac4229af1f2dd3c62fcb7d5Behdad Esfahbod 2094ba647eecf0f70917ac4229af1f2dd3c62fcb7d5Behdad Esfahbod free (data); 210e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 211e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 212e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 213e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 214e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper 215e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 216e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 217b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_context_t 218b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 219e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod /* Input to hb_ot_shape_internal() */ 220b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_plan_t *plan; 221b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_font_t *font; 222b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_face_t *face; 223b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_buffer_t *buffer; 224b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_feature_t *user_features; 225b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod unsigned int num_user_features; 226b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 227b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod /* Transient stuff */ 228b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_direction_t target_direction; 229b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_bool_t applied_position_complex; 230b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 231b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 232e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbodstatic void 23352601275d5e4000dada4f925fb78723eeeee7bd4Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 234e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod{ 235605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t global_mask = c->plan->map.get_global_mask (); 23657ac0ecb7843533b2e6e6d6c8a12b2a44437cc1cBehdad Esfahbod c->buffer->reset_masks (global_mask); 2375b88908f12ad1d828dd6075fb8fc0036c2d6af3aBehdad Esfahbod 238693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (c->plan->shaper->setup_masks) 239693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod c->plan->shaper->setup_masks (c->plan->shaper, &c->plan->map, c->buffer, c->font); 2402989be4919242670c94825bded96db20a7b2035bBehdad Esfahbod 241d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 242efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod { 243d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 2444924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 2454924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod unsigned int shift; 246605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t mask = c->plan->map.get_mask (feature->tag, &shift); 247bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 2484924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 249efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod } 2502014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 2512014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 2522014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 253ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 254ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 255ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 256ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 257b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstatic void 258b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodhb_set_unicode_props (hb_buffer_t *buffer) 2593a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 260aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 2610e3361464b00b76aa7375515163e0710a691db0cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 262d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod _hb_glyph_info_set_unicode_props (&buffer->info[i], buffer->unicode); 2633a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 2643a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 2653a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 266aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_form_clusters (hb_buffer_t *buffer) 267ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 268aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 269ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) 270d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod if (FLAG (_hb_glyph_info_get_general_category (&buffer->info[i])) & 2714a68684654e645882095c1189477146287ce9437Behdad Esfahbod (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | 2724a68684654e645882095c1189477146287ce9437Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | 273d63adfc7d09b26764d9166da97372b21257e7611Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK))) 274330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod buffer->merge_clusters (i - 1, i + 1); 275ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 276ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 277967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 278aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_ensure_native_direction (hb_buffer_t *buffer) 279ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 280aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_direction_t direction = buffer->props.direction; 281ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2827403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 2837403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 2847403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2857403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 286aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (buffer->props.script)) || 2877403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 288ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 289aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_buffer_reverse_clusters (buffer); 290aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod buffer->props.direction = HB_DIRECTION_REVERSE (buffer->props.direction); 291ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 293ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 294ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 295ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 296ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 297ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 298aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbodhb_mirror_chars (hb_ot_shape_context_t *c) 299ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 300fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 301ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 302bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 303ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 304ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 30539dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 3064e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 307aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 308ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 309c4641723fbf6532b2e80a662e15573b31276bc73Behdad Esfahbod hb_codepoint_t codepoint = hb_unicode_mirroring (unicode, c->buffer->info[i].codepoint); 310aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 311bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; /* XXX this should be moved to before setting user-feature masks */ 3121094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 313aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 314ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 315ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 316ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 317ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 318ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodhb_map_glyphs (hb_font_t *font, 319ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod hb_buffer_t *buffer) 320ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 3215d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod hb_codepoint_t glyph; 3225d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 323ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod if (unlikely (!buffer->len)) 324ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 325ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 326a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->clear_output (); 3275d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 328ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod unsigned int count = buffer->len - 1; 329468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod for (buffer->idx = 0; buffer->idx < count;) { 33099c2695759a6af855d565f4994bbdf220570bb48Behdad Esfahbod if (unlikely (_hb_unicode_is_variation_selector (buffer->cur(+1).codepoint))) { 33199c2695759a6af855d565f4994bbdf220570bb48Behdad Esfahbod hb_font_get_glyph (font, buffer->cur().codepoint, buffer->cur(+1).codepoint, &glyph); 332a4385f0b0a6949e2ce49e6a147ad4beaa724f6c3Behdad Esfahbod buffer->replace_glyphs (2, 1, &glyph); 333ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } else { 33499c2695759a6af855d565f4994bbdf220570bb48Behdad Esfahbod hb_font_get_glyph (font, buffer->cur().codepoint, 0, &glyph); 3350fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 336ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 337ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 338468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod if (likely (buffer->idx < buffer->len)) { 33999c2695759a6af855d565f4994bbdf220570bb48Behdad Esfahbod hb_font_get_glyph (font, buffer->cur().codepoint, 0, &glyph); 3400fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 3410fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod } 342468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod buffer->swap_buffers (); 343ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 344ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 345ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 346967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_default (hb_ot_shape_context_t *c) 347ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 348b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_mirror_chars (c); 349b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 35072657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_map_glyphs (c->font, c->buffer); 351ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 352ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 353ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 3545fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbodhb_synthesize_glyph_classes (hb_ot_shape_context_t *c) 3555fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod{ 3565fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod unsigned int count = c->buffer->len; 3575fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 3585fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod c->buffer->info[i].glyph_props() = FLAG (_hb_glyph_info_get_general_category (&c->buffer->info[i])) & 3595fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | 3605fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | 3615fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)) ? 3625fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod HB_OT_LAYOUT_GLYPH_CLASS_MARK : 3635fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH; 3645fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod} 3655fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3665fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3675fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbodstatic void 368c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 369c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 37005bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod hb_ot_layout_substitute_start (c->face, c->buffer); 37105bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod 3725fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod if (!hb_ot_layout_has_glyph_classes (c->face)) 3735fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod hb_synthesize_glyph_classes (c); 3745fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3755fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod if (hb_ot_layout_has_substitution (c->face)) 376b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->plan->map.substitute (c->face, c->buffer); 377c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 37805bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod hb_ot_layout_substitute_finish (c->face, c->buffer); 379c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 380c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 381c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 382c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 383ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 384ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 385ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 386ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 387967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_default (hb_ot_shape_context_t *c) 388ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 38905bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod hb_ot_layout_position_start (c->font, c->buffer); 390ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 391967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 392ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 393744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod hb_font_get_glyph_advance_for_direction (c->font, c->buffer->info[i].codepoint, 394744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod c->buffer->props.direction, 395744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].x_advance, 396744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].y_advance); 3978b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 3988b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod c->buffer->props.direction, 3998b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].x_offset, 4008b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].y_offset); 401ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 402ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 403ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 404ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 4052bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbodhb_zero_mark_advances (hb_ot_shape_context_t *c) 4062bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod{ 4072bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod unsigned int count = c->buffer->len; 4082bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 4092bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod if (c->buffer->info[i].glyph_props() & HB_OT_LAYOUT_GLYPH_CLASS_MARK) 4102bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod { 4112bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod c->buffer->pos[i].x_advance = 0; 4122bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod c->buffer->pos[i].y_advance = 0; 4132bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod } 4142bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod} 4152bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 4162bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbodstatic void 417c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 418c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 419c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 420b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod if (hb_ot_layout_has_positioning (c->face)) 421b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod { 422b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod /* Change glyph origin to what GPOS expects, apply GPOS, change it back. */ 423b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 424b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod unsigned int count = c->buffer->len; 425b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 426b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_font_add_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 427b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_DIRECTION_LTR, 428b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].x_offset, 429b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].y_offset); 430b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 431c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 432b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->plan->map.position (c->font, c->buffer); 433c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 434b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 435b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 436b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_DIRECTION_LTR, 437b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].x_offset, 438b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].y_offset); 439b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 4402118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod 4410594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod c->applied_position_complex = true; 4421e7d860613032e40a3f90e2caa2ee5ac44ab8c8cBehdad Esfahbod } else 4432bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod hb_zero_mark_advances (c); 4442bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 4451e7d860613032e40a3f90e2caa2ee5ac44ab8c8cBehdad Esfahbod hb_ot_layout_position_finish (c->font, c->buffer, c->plan->shaper->zero_width_attached_marks); 446c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 447c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 448c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 449c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 450c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodstatic void 451967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 452ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 453ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Mark pos */ 454ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 455ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 456ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 457967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_truetype_kern (hb_ot_shape_context_t *c) 458ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 459ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Check for kern=0 */ 460967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 461ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 462a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod hb_position_t x_kern, y_kern, kern1, kern2; 4637e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod hb_font_get_glyph_kerning_for_direction (c->font, 4647e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->info[i - 1].codepoint, c->buffer->info[i].codepoint, 4657e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->props.direction, 4667e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod &x_kern, &y_kern); 467a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 468a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = x_kern >> 1; 469a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = x_kern - kern1; 470967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i - 1].x_advance += kern1; 471967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_advance += kern2; 472967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_offset += kern2; 473a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 474a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = y_kern >> 1; 475a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = y_kern - kern1; 476a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i - 1].y_advance += kern1; 477a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_advance += kern2; 478a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_offset += kern2; 479ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 480ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 481ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 482ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 483967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback_visual (hb_ot_shape_context_t *c) 484ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 485967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_truetype_kern (c); 486ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 487ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 488d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbodstatic void 489d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbodhb_hide_zerowidth (hb_ot_shape_context_t *c) 490d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod{ 491d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_codepoint_t space; 492d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod if (!hb_font_get_glyph (c->font, ' ', 0, &space)) 493d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod return; /* No point! */ 494d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 495d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod unsigned int count = c->buffer->len; 496d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 497b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod if (unlikely (!is_a_ligature (c->buffer->info[i]) && 498b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod _hb_glyph_info_is_zero_width (&c->buffer->info[i]))) { 499d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->info[i].codepoint = space; 500d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->pos[i].x_advance = 0; 501d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->pos[i].y_advance = 0; 502d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod } 503d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod} 504d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 505ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 506ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Do it! */ 507ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 508967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 509e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shape_internal (hb_ot_shape_context_t *c) 510ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 511b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->buffer->deallocate_var_all (); 512b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 513d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 514bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 515d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 516d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props0); 517d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props1); 518b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 519330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod c->buffer->clear_output (); 520330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod 521d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_set_unicode_props (c->buffer); 522fc96596b7c1c4e62491e951a3c256fb00dcde550Behdad Esfahbod 5234ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod hb_form_clusters (c->buffer); 5244ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod 525aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_ensure_native_direction (c->buffer); 52654d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod 5277e34601dededd521bcef15111e39293df3d0d13dBehdad Esfahbod _hb_ot_shape_normalize (c->font, c->buffer, 528693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod c->plan->shaper->normalization_preference ? 529693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod c->plan->shaper->normalization_preference (c->plan->shaper, &c->buffer->props) : 530693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT); 531655586fe5e1fadf2a2ef7826e61ee9a445ffa37aBehdad Esfahbod 532b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_ot_shape_setup_masks (c); 53398370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 5341094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* SUBSTITUTE */ 535fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 536967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_default (c); 537bbc7a99d01298f9be1ebaaceacbc9bc961e247e5Behdad Esfahbod 53836925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_substitute_complex (c); 539fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 5401094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod 5411094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* POSITION */ 542fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 543967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_default (c); 544ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 54536925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_position_complex (c); 546ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 547967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_bool_t position_fallback = !c->applied_position_complex; 548fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 549967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback (c); 550ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 551967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 552967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_buffer_reverse (c->buffer); 553ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 554fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 555967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback_visual (c); 556fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 557ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 558d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_hide_zerowidth (c); 559d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 560d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props1); 561d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props0); 562b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 563bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 5649f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod 5659f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod c->buffer->deallocate_var_all (); 566967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 567967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 568fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 56902aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbodhb_bool_t 570bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod_hb_ot_shape (hb_shape_plan_t *shape_plan, 571bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod hb_font_t *font, 5726bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod hb_buffer_t *buffer, 5736bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod const hb_feature_t *features, 5746bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod unsigned int num_features) 575967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 576e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_context_t c = {HB_SHAPER_DATA_GET (shape_plan), font, font->face, buffer, features, num_features}; 577e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_internal (&c); 57802aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod 5790594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod return true; 580ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 5811827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5821827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5831827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodvoid 5841827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodhb_ot_shape_glyphs_closure (hb_font_t *font, 5851827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_buffer_t *buffer, 5861827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod const hb_feature_t *features, 5871827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int num_features, 5881827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t *glyphs) 5891827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod{ 5901827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_ot_shape_plan_t plan; 5911827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5921827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod buffer->guess_properties (); 5931827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 594e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod /* TODO cache / ensure correct backend, etc. */ 595e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_shape_plan_t *shape_plan = hb_shape_plan_create (font->face, &buffer->props, features, num_features, NULL); 5961827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5971827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* TODO: normalization? have shapers do closure()? */ 5981827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* TODO: Deal with mirrored chars? */ 5991827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_map_glyphs (font, buffer); 6001827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6011827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* Seed it. It's user's responsibility to have cleard glyphs 6021827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod * if that's what they desire. */ 6031827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int count = buffer->len; 6041827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 6051827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_add (glyphs, buffer->info[i].codepoint); 6061827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6071827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* And find transitive closure. */ 6081827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t copy; 6091827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.init (); 6101827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6111827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod do { 6121827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.set (glyphs); 613e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod HB_SHAPER_DATA_GET (shape_plan)->map.substitute_closure (font->face, glyphs); 6141827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod } while (!copy.equal (glyphs)); 615e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 616e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_shape_plan_destroy (shape_plan); 6171827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod} 618